 Free Daily Sudoku Puzzles
For this canonical puzzle the aim is to fill every square in the 9x9 grid with a number 19. Every row, every column, and every 3x3 box must contain the digits 1 through 9. Free Daily Sudoku has online puzzles and daily puzzles by email or RSS feed. Also
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 Free Math Flashcards, Math Resources, and Math Games  Linda Blumenthal, Thinkwell Corp., NY
Free math resources and educational games, including talking math flashcards. Learn math using a multisensory approach.
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 Free Math Help  Florent Gouachon; fmaths.com
Free math lessons and problems from 1st Grade to 11th Grade. Free signup required in order to save your work.
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 Free Math Help  Ted Wilcox
Free tutorials, glossary, study tips, calculator advice, and more, including annotated links to other resources.
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 Free Multiplication Practice  Fran Hilgendorf, Home Education Resources
Colorful multiplication worksheets and activities in easy to print PDF format.
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 Free Ruler  Pascal
Free Ruler is a free screen ruler for Mac OS X with the following features: a horizontal and vertical ruler which can be used independently or simultaneously; measurement in pixels, inches, picas, or centimeters; automatic alignment of rulers; the ability
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 Free Teaching Resources  BossBrains
Free resources for educators, including: customizable worksheets, quizzes and timed tests; flash cards; telling time clocks; and AwardMaker (customize and print awards and certificates).
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 Free Tiiu Pix  Tiiu Roiser
A collection of thousands of free, highresolution images for enhancing lesson plans, as well as research by teachers and students alike. Roiser, a retired teacher, organizes her photos and graphics into categories such as architecture, food, holidays,
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 The Freudenthal Institute (FI)  Utrecht University, The Netherlands
The National Expertise Center for Mathematics Education in primary and secondary education in the Netherlands. Browse or search research projects including vocational/adult education, math in the city, cultural minorities and math education, innovation
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 Frieze Patterns  David A. Reid
A frieze is a pattern which repeats in one direction. Friezes are often seen as ornaments in architecture. A mathematical analysis reveals that there are seven different frieze patterns possible. These resources were designed for a standardsbased project
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 Frieze Patterns in Cast Iron  University of Cambridge
The 'Sydney Lace' of Australia and the rest of the world, from Paris and New Orleans to Brisbane and Melbourne: examples of all seven frieze pattern types in cast iron decorative work.
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 From Constructivism to Active Learning  Siegfried M. Holzer
Summary of an essay defining constructivism and outlining its implications for education: active learning, authentic activities, students' views, authentic assessment, and innovative curriculum. Published in the hypermedia publication of SUCCEED: The
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 From Lewis Carroll to Archimedes  Cut the Knot!, Alexander Bogomolny
On March 29, 1879, Vanity Fair began offering its subscribers a new weekly puzzle invented by Lewis Carroll... on March 17, 1953 Frank Gray, a research scientist at Bell Labs, filed patent no. 2632058, for the Gray code encoding
the vacuum tube. An ndigit
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 From Now On
A Monthly Electronic Commentary on Educational Technology Issues. Previous issues archived by theme and date; since 1991.
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 The Fruit Game
An interactive game in which players take turns removing fruit from the table according to the rules. The player who removes the last fruit from the table loses. Based on the mathematical puzzler known as the game of Nim.
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 Fuel the Brain  Dynamics of Design
Educational games, interactives, printables, teacher guides, articles and tutorials, and seasonal resources. The "inevitable" product of an elementary teacher and her graphic/web designer spouse, Fuel the Brain's most popular Flash games include Jelly
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 Fun 4 the Brain  Natasha Oliver
Flash games in addition (snowy fun and farm freakout), subtraction (color your vacation and "Can You Dig it?"), multiplication (ping pong the panda and granny prix), and division (Peabody the Penguin, and Sketch), with selfgrading timed quizzes in some
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 FUNBRAIN: Educational, Online Games for Kids  The Learning Network
Interactive, educational math games for kids and children of all ages. Games include Math Baseball and Power Football (test your arithmetic at four possible levels), and Change Maker (run a cash register), as well as Fun Match (a memory game for fractions
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 Function Machines  Maria Droujkova, Dmitri Droujkov; Natural Math
For children and adults who are starting to develop the concept of function. The authors advise approaching the concept early in life using common sense and intuition, returning to it again and again, each time with a new level of understanding. The units
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 Fundamental Concepts of Fractions  Goalfinder
Commercial interactive fraction animation in Flash format; covers types of fractions, mathematical operations with fractions. Intended to use stories and entertainment to make learning fractions fun.
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 FUNdamentally MATH  Chip Publications
A commercial DOS/Windows program covering kindergarten through grade 12 math topics (Basic skills: Addition, subtraction, multiplication, division, negative numbers; Fractions: ordinary and decimal; Middle school geometry; Exponents: powers, roots, number
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 Funding Educational Technology: Online Resources (NJ NIE)  New Jersey Networking Infrastructure in Education
The sites listed may not have information directly relating to obtaining funding, but all of the organizations do provide it. Links to sites in the following categories: government, foundation, business, and other, and a section of grants for school telecommunications
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 Funforms: a New Math Learning System  Joel S. Steinberg
An abacus or sliderulelike notation system, essentially binary (though a trinary system also exists). The web site includes a description of how to use it, and suggests that it might be taught to preschoolers as a game, or used to teach math concepts
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 Fun Math for Kids from Big Learning  Dr. Karen A. Cole
Realworld applications for elementary school kidsespecially designed for parents and kids to explore together. Also great for classroom warmup activities.
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 Fun with Fractals and the Platonic Solids  Gayla Chandler
A site rich with photographs and drawings of Sierpinski triangles and Platonic solids, made by hand, to inspire children of all ages to construct their own mathematical structures. See photographs, many set in marine environments, of dodecahedra, hexahedra
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 Fun with maths!  Stuff Media, U.K.
Puzzles for which you need shockwave installed on your computer. (You can download it from this site.) Number Square (add numbers and see them grow, smash them with a fist, make patterns); Think of a number between one and nine, multiply it by 5... will
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 Fun with Probability! The Probable Pen in the Cereal Box  Michael Cornell; College of Education, Univ. of Illinois at UrbanaChampaign
A cooperative classroom project for grades K9. Over a threeweek period (24 April  10 May 1996), project participants jointly calculated the expected value of a simple probability problem via experimentation. This joint effort among interested schools
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 Furbles  Alec McEachran
Furbles are engaging creatures intended to help youngsters engage with probability and statisticsto make concrete the connection between data and the representations of data. It may be used on an interactive whiteboard, and is flexible enough for teachers
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 Future of Math  Jamie Tubbs
This site supports the use of blogs, digital cameras, digital portfolios, discussion forums, spreadsheets, and other digital media to enhance student understanding of mathematics. Find suggestions on how to teach with journals, problemsolving, learning
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 Future School
Developer of educational software, online tutoring, and home schooling courses. Video tutorials. Sample lessons and ordering information available.
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 Gallery of Fractal Images  Paul Bourke
An experiment in a creating a virtual gallery based upon a minimal WWW environment that doesn't require Java, VRML, or server features such as a rendering engine or CGI programs. Upon entering the gallery, move forward by clicking near the upper center
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 Gamco Education Materials: Educational Software for K12
Programs for Macintosh and Windows, with downloadable demo versions. Math programs include: Skillbuilders (perimeter, area, volume, whole numbers, fractions); Paws and Pyramids (perimeter/area/volume game); Word Problem Square Off Series; Touchdown Math
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 Gamelan  The Official Java Directory  EarthWeb, Inc.
Gamelan's primary mission is to serve as a central registry and directory of Java resources. Much like Yahoo!, Gamelan collects links to resources stored on other sites across the Web. However, unlike Yahoo!, Gamelan's mission is specific  Gamelan collects
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 A Game of Numbers  Joseph Michels
This puzzle game for Windows, Mac, or Linux requires math and logic skills to solve increasingly difficult challenges  from basic math operations to divisibility, algebra, functions, and more. The builtin editor also lets players create their own levels,
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 gamepuzzles: for the joy of thinking  Kadon Enterprises, Inc.
Board games and the like: Combinatorial puzzles, tessellations, math manipulatives for all grades. Handson sets and some online exemplars of polyominoes, polyforms, color tilings. Source for classics like Archimedes' Square (Stomachion), Penrose tiles,
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 Games2Learn
Vendor of educational games, software, and activities for both parents and teachers. The site may be searched by category (Math, Spatial Learning, Science and Tech, etc.), grade level, game type, or personality profile (Planner, Peacekeeper, Producer,
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 Games for Math and Social Skills  Suzanne Alejandre
A collection of links to games for building math and social skills such as cooperation, collaboration, listening, teamwork, and giveandtake.
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 GAMES Group  The University of Alberta
GAMES is a research group for Gameplaying, Analytical methods, Minimax search and Empirical Studies. It produces realtime programs for strategic game such as Amazons, Awari, Checkers, Chess, Domineering, Go, Hex, Lines of Action, Othello, Poker, RoShamBo,
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 Games on Graphs (MegaMath)  Nancy Casey; Los Alamos National Laboratory
Students use algebraic methods to explore, model, and describe patterns and functions involving numbers, shapes, data, and graphs in problemsolving situations and communicate the reasoning used in solving these problems. Graphs, stories and games provide
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 Gardner's Multiple Intelligences  PoChing Wang; the Key School
Howard Gardner, a Harvard psychologist, won a MacArthur Foundation genius grant in 1981. In his 1983 book Frames of Mind Gardner attacks the notion of generalized intelligence, identifying instead seven intelligences or areas of intellectual competence.
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 Gary Haynes  Gary Haynes
Course syllabi, lesson plans, homework, and objectives. Visit "Tangrams and Other Games" for an interactive tangram story and a Flash presentation on how to develop an understanding of functions through the use of the motion sensor.
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 Gasoline Sales  Reading a Chart  NASA Lewis Learning Technologies Project
This chart shows the actual and predicted gasoline sales for one year. During which month was there the greatest difference between the predicted and actual gasoline sales? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Gas, Water, Electricity (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
A diagram shows three houses, each connected to three utilities. Show that it is impossible to rearrange the connections so that they don't intersect each other. Could you do it if the earth were a not a sphere but some other surface?
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 Gecko Stone  John August
Tessellated, interlocking concrete pavers and molds. Like Escher's reptile, the tessellating shapes are modified hexagons.
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 GEM: Gateway to Educational Materials  National Library of Education (NLE)
A database for education links, intended to be more useful for teachers than a search engine. It records the resources of its consortium members (information on joining the consortium is available onsite). Users are able to: browse through lists organized
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 Gender, Diversities, and Technology Institute  Education Development Center, Inc. (EDC)
The Gender, Diversities & Technology Institute focuses on developing genderhealthy education and schools; technology and gender; the elimination of all forms of gendered violence; improving economic selfsufficiency for both women and men; and developing
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 Gender Equity in Education  Martha C. PhelpsBorrowman
Listing of gender equity sites; directory of science lesson plans.
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 Gender Issues: Articles and Research  Carolyn K., Hoagies' Gifted Education Page
Articles and reports on gender and equity in schools, in particular in the context of the education of gifted children.
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 General Tables of Units of Measurement  Office of Information Services, National Institute of Standards and Technology (NIST)
Tables of metric units of measurement; tables of U.S. units of measurement; notes on British units of measurement; tables of units of length (international and survey), area (international and survey), capacity (dry and liquid volume measure), mass not
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 Gene's Corner: A Play on Numbers  Eugene Maier, Math Learning Center (MLC)
A series of mathematical vignettes that use visual models to illuminate elementary math topics. The scenes include: The Counting Numbers; Adding Counting Numbers; Subtracting Counting Numbers; Multiplying Counting Numbers; Dividing Counting Numbers; The
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